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marusya05 [52]
3 years ago
7

Laboratory tests show that the lives of light bulbs are normally distributed with a mean of 750 hours and a standard deviation o

f 750 hours. Find the probability that a randomly selected light bulb will last between 750 and 825 hours.
[?]%
Mathematics
1 answer:
BartSMP [9]3 years ago
5 0

Answer:

34

Step-by-step explanation:

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I need help with this question on my geometry homework
Margarita [4]

Answer:

x = 250°

Step-by-step explanation:

Inscribed angle = ½(intercepted arc measure) (inscribed angles theorem)

x is intercepted arc measure

125° is the inscribed angle

Therefore:

125° = ½(x)

Multiply both sides by 2

2*125° = x

250 = x

x = 250°

7 0
3 years ago
What is the value of x (x+2)(x-3)=0
wolverine [178]

Answer:

x = 3 or x = -2

Step-by-step explanation:

Solve for x over the real numbers:

(x + 2) (x - 3) = 0

Hint: | Find the roots of each term in the product separately.

Split into two equations:

x - 3 = 0 or x + 2 = 0

Hint: | Look at the first equation: Solve for x.

Add 3 to both sides:

x = 3 or x + 2 = 0

Hint: | Look at the second equation: Solve for x.

Subtract 2 from both sides:

Answer: x = 3 or x = -2

8 0
3 years ago
Peyton is taking a multįple choice test with a total of 20 points available. Each
OleMash [197]

Answer:

if she got 4 questions wrong it would be 12

her score if she got x questions wrong it would be 20-2x

6 0
3 years ago
HELLPPPPPPPPPPPPPPPPP
forsale [732]

Answer:

y=-1/3x-8

Step-by-step explanation:

Here is the equation for slope-intercept form: y=mx+b

Ok first, let's find the y intercept, which is equal to b in slope-intercept form.

To find the y intercept, we need to look at the y axis. It is the point where the line touches it. The graph shows that the line touches the y axis at -8, so that is the y intercept, (0, -8).

Now, from that point, we need to find the slope, which is equal to m in slope-intercept form.

To find the slope, start on the point that you are on, which should be the y intercept, and count how many spaces you need to go up or down, and then left or right until you get to any other point on the line. These are called the rise (change in y) and run (change in x) respectively. The slope is equal to the rise over the run, or rise/run.

In this case, we can choose any point on the line that is shown on the graph that isn't the y intercept. I'll chose the point on the right nearest to the y intercept. From the point we are on, which is (-8,0), we will need to move one space down and three to the right.

One space down on the y axis is -1, and three spaces to the right on the x axis is +3, so our slope will be -1/+3, which is -1/3.

Let's go back to the slope-intercept form. y=mx+b. Now we can plug our information in.

We know the y intercept is -8, which is b,

and we know the slope is -1/3, which is m.

So substituting for b and m, we get y=-1/3x-8.

6 0
2 years ago
Im giving free brain list just answer this question . what is 9.62 x 0.38
Sphinxa [80]

Answer:

3.6556

Step-by-step explanation:

Multiply both, can i get brainliest?

5 0
2 years ago
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